What to keep in a safe deposit box!

The All Financial Matters weblog lists several items that belong in your safe deposit box.

The post covers the personal, property, and business documentation that you should keep in your safe deposit box (which, as the author points out, is a tax-deductible rental), from your birth certificate and deeds to employment contract and bonds. I'm curious - how many of you have a safe deposit box? If you do have one, what do you keep in it?